Hey Guys,
Well today is D-Day for 642-661 and I....Feeling super confident as I've loved learning all the advanced aspects of BGP!

It honestly has not been a dry topic and the time seems to have just flown by since my last exam in March (QoS).
Study Tools I've used
Cisco Learning Network
Cisco.com Docs
Internet Routing Architectures (Sam Halabi) - Fantastic book!!!!
BGP Design and Implementation (Randy Zhang) - Really good as well!
BGP-4 Command and Configuration Handbook - Great refresher
and plenty of Lab work

Well I'm off to the test centre now..... I'll post on here a bit later today!